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(TiB2p + TiBw)/Cu composites are prepared by in situ reaction casting. The effect of Ce content on the microstructures, electrical conductivity, and tensile strength of (TiB2p + TiBw)/Cu composites are studied. The results show that the right amount of Ce can significantly refine the reinforcements and the copper matrix grains, and improve the morphology and distribution of the reinforcements. Correspondingly,...
The microstructures and properties of Cu‐xCr‐0.4Nb alloys were investigated by changing Cr composition and cooling mode. The as‐cast microstructures and fracture morphologies were observed by SEM. The morphology and size of the precipitated phase were observed by TEM. The hardness, electrical conductivity, and tensile strength of the resulting alloys were also tested. For Cu‐xCr‐0.4Nb alloys cooled...